Mine exploration, photographs and mining history for mine explorers, industrial archaeologists, researchers and historians Mine explorer and mining history videos on YouTube Connect with other mine explorers on Facebook
Tip: do not include 'mine' or 'quarry', search by name e.g. 'cwmorthin', use 'Sounds like search' if unsure of spelling

Advanced Search
'Sounds like search'
Quick a b c d e f g h i j k l m n o p q r s t u v w x y z
Tip: narrow down your search by typing more than one word and selecting 'Search for all words' or 'Exact search'

Search for any word
Search for all words
Exact search
Tip: narrow down your search by typing more than one word and selecting 'Search for all words' or 'Exact search'

Search for any word
Search for all words
Exact search

Posts by derrickman

Showing 1334 results below:

Author Message
Topic: Borrowdale Graphite Mine
derrickman

Forum: General Chat   Posted: 30/01/2010 16:57:11   Subject: Borrowdale Graphite Mine
[quote="Morlock"][quote="derrickman"]it was always my understanding that items like pencil leads and motor brushes were sintered ( formed in moulds from powder under heat and pressure )[/quote]
<
Topic: Borrowdale Graphite Mine
derrickman

Forum: General Chat   Posted: 30/01/2010 07:11:01   Subject: Borrowdale Graphite Mine
baaaaaaaaaaaaaaaaaaaa ...... :lol:

so, what are the actual veins like? I get the impression from the pictures that they are quite narrow, so even if there are remnants of producing veins
Topic: Borrowdale Graphite Mine
derrickman

Forum: General Chat   Posted: 29/01/2010 06:30:05   Subject: Burrowdale Graphite Mine
there's a widespread misconception regarding the relationship between minerals in their natural state and their refined form.

People rarely understand that production grades usually range f
Topic: botallack diagonal shaft
derrickman

Forum: South West England   Posted: 28/01/2010 19:23:44   Subject: botallack diagonal shaft
that's my recollection of the place, dating from the mid-70s
Topic: 3D computer mine plan/model? anyone?
derrickman

Forum: General Chat   Posted: 25/01/2010 19:57:09   Subject: 3D computer mine plan/model? anyone?
no steelwork in this one :lol:

[url]http://i1023.photobucket.com/albums/af356/grass_stroker/Sam.jpg[/url]

Sam at Combe Down.. with a flat battery in his camera... but plenty of
Topic: 3D computer mine plan/model? anyone?
derrickman

Forum: General Chat   Posted: 25/01/2010 18:42:25   Subject: 3D computer mine plan/model? anyone?
it's a fascinating video for a while, but after 15 months the place is printed on the inside of my eyelids anyway, if only for the sake of being able to find your way out again....

concret
Topic: A head for heights
derrickman

Forum: North America   Posted: 25/01/2010 18:40:41   Subject: A head for heights
definitely a 'luxury long drop'.....
Topic: 3D computer mine plan/model? anyone?
derrickman

Forum: General Chat   Posted: 25/01/2010 12:14:26   Subject: 3D computer mine plan/model? anyone?
[url]http://i1023.photobucket.com/albums/af356/grass_stroker/Img_4_1024.jpg[/url]

[url]http://i1023.photobucket.com/albums/af356/grass_stroker/Img_3_1027.jpg[/url]

[url]http://i1
Topic: Cwt-Y-Bugail 'steam dinosaur'
derrickman

Forum: North Wales   Posted: 25/01/2010 07:39:51   Subject: Cwt-Y-Bugail 'steam dinosaur'
that's true up to a point, but from what I understand one was due to be destroyed by ongoing mining operations and the other was deteriorating increasingly in an exposed location.

the vario
Topic: 3D computer mine plan/model? anyone?
derrickman

Forum: General Chat   Posted: 24/01/2010 20:48:43   Subject: 3D computer mine plan/model? anyone?
all interesting stuff.

I had the opportunity to visit Keith at WUM and was shown part of his work at S Crofty, very complex stuff including the thorny issue of correlating the various surv
Topic: Cwt-Y-Bugail 'steam dinosaur'
derrickman

Forum: North Wales   Posted: 24/01/2010 20:34:05   Subject: Cwt-Y-Bugail `steam dinosaur`.
[quote="JohnnearCfon"][quote="derrickman"]the main thing is, that these machines are still extant at all and can be seen working.

I take it that the comment about 'rebuilding' the boiler is
Topic: Cwt-Y-Bugail 'steam dinosaur'
derrickman

Forum: North Wales   Posted: 24/01/2010 13:36:42   Subject: Cwt-Y-Bugail `steam dinosaur`.
the main thing is, that these machines are still extant at all and can be seen working.

I take it that the comment about 'rebuilding' the boiler is akin to the problems of registering a res
Topic: Great Railway Journeys.
derrickman

Forum: Midlands   Posted: 24/01/2010 11:28:48   Subject: Great Railway Journeys.
so... if South Crofty spent money on modernising their pumping layout in 1990-ish, is this something which will benefit the current operation?

You appear to be saying that the excavation an
Topic: Great Railway Journeys.
derrickman

Forum: Midlands   Posted: 24/01/2010 08:56:28   Subject: Great Railway Journeys.
I wouldn't get too excited about the ' Tory destruction' of the Cornish industry.

I was down there in the early to late 70s and my recollection is that Wheal Jane opened and closed twice i
Topic: Great Railway Journeys.
derrickman

Forum: Midlands   Posted: 24/01/2010 00:08:22   Subject: Great Railway Journeys.
Michael Portillo, born 1953, entered Parliament 1984, left 2005

the Vulcan link is interesting, also the production figures projected to yer'man Portillo. I hope it pays off. There are some
Topic: Great Railway Journeys.
derrickman

Forum: Midlands   Posted: 23/01/2010 21:26:54   Subject: Great Railway Journeys.
caught up with this on iplayer, interesting stuff.

the 'call me Mike' act is a bit cringeworthy, though.
Topic: Cwt-Y-Bugail 'steam dinosaur'
derrickman

Forum: North Wales   Posted: 23/01/2010 21:24:34   Subject: Cwt-Y-Bugail `steam dinosaur`.
as far as I understand it, most working steam engines these days ( especially the century-old examples found on some preserved lines ) are best regarded as 'replicas incorporating parts from the origi
Topic: Welsh Highland Railway
derrickman

Forum: Mine Tramways and Railways   Posted: 14/01/2010 21:42:25   Subject: Welsh Highland Railway
[quote="Morlock"][quote="derrickman"]I saw someone get a bike stuck in the tram lines outside the station in Tunis two years ago, street theatre worthy of Terry Pratchett![/quote]

Happened
Topic: Welsh Highland Railway
derrickman

Forum: Mine Tramways and Railways   Posted: 14/01/2010 19:42:38   Subject: Welsh Highland Railway
I saw someone get a bike stuck in the tram lines outside the station in Tunis two years ago, street theatre worthy of Terry Pratchett!
Topic: Welsh Highland Railway
derrickman

Forum: Mine Tramways and Railways   Posted: 14/01/2010 15:10:39   Subject: Welsh Highland Railway
often a problem with the interface between historic and modern....
Topic: new Penryn photos
derrickman

Forum: North Wales   Posted: 14/01/2010 14:58:24   Subject: new Penryn photos
[quote="ragl"]Hi Derrickman,

If it is the picture showing what is believed to be Hunslet "Lilian", the loco immrediately behind is "Sgt Murphy", built by Kerr Stuart. "Sgt Murphy" was heav
Topic: new Penryn photos
derrickman

Forum: North Wales   Posted: 14/01/2010 09:43:10   Subject: new Penryn photos
interesting to see the variety of locos in use. One pic ( the one of the unidentified Hunslet in the scrap road ) appears to show a Decauville?
Topic: new Penryn photos
derrickman

Forum: North Wales   Posted: 14/01/2010 07:49:32   Subject: new Penryn photos
http://ronfisher.fotopic.net/c916150.html

well, I haven't seen them before.....
Topic: Croesor & other mines on S4C (viewable online)
derrickman

Forum: North Wales   Posted: 13/01/2010 15:58:07   Subject: Croesor - really?
[url]http://i1023.photobucket.com/albums/af356/grass_stroker/spread1.jpg[/url]

Peugeot van and 1980s Land Cruiser ( £1500 from ebay... ) on pipeline spread at Felindre, 2007.... towed the v
Topic: Croesor & other mines on S4C (viewable online)
derrickman

Forum: North Wales   Posted: 13/01/2010 15:52:25   Subject: Croesor - really?
it's amazing where you can get to in an Escort van if you put your mind to it..... :o
Topic: Middleton Limestone Mine
derrickman

Forum: Midlands   Posted: 13/01/2010 15:17:13   Subject: Middleton Limestone Mine
I believe that my old college mate Sam Wood was underground manager at Middleton in the 90s.
Topic: Croesor & other mines on S4C (viewable online)
derrickman

Forum: North Wales   Posted: 13/01/2010 15:14:50   Subject: Croesor - really?
I once had the interesting experience of being involved in a visit by Blue Peter to a TBM holing through on the London Water Ring Main project, back in the late 1980s.

you would never know
Topic: Pyrite eating bacteria/O2 levels in mines.
derrickman

Forum: General Chat   Posted: 11/01/2010 16:53:39   Subject: Pyrite eating bacteria/O2 levels in mines.
[quote="Morlock"]quote]For such a small piece of stuff, it was like armageddon below. Anyway, those were the days :tongue: [/quote]

Good old days. ;D [/quote]

life's no fun anym
Topic: candle light trip
derrickman

Forum: General Chat   Posted: 09/01/2010 21:55:52   Subject: candle light trip
my daughter made a tallow candle as a school project a while ago, filthy smelly thing, smoked worse than my old nan...

I'd quite like to do a carbide trip, if only to be able to get the thi
Topic: candle light trip
derrickman

Forum: General Chat   Posted: 09/01/2010 19:28:38   Subject: candle light trip
[quote="Vanoord"]Originally tallow, surely?

Slightly off-topic, it might be interesting to do a "non-LED" trip - to recall the days when Maglites were king![/quote]

it's like Roy
Topic: candle light trip
derrickman

Forum: General Chat   Posted: 09/01/2010 18:25:37   Subject: candle light trip
what about carbide?

I've tried a candle-lit trip and what actually happened, was that I couldn't keep the candle on my hat. Wrong sort of clay and a plastic hard-hat.

there mus
Topic: Running out of road salt...
derrickman

Forum: Scotland   Posted: 09/01/2010 18:22:12   Subject: Running out of road salt...
[quote="ttxela"][quote="Peter Burgess"]It's a rubbish picture, and would never win a competition since there is nobody in it for scale.[/quote]

Nobody in it :confused: where did everyone
Topic: Looking after the pit ponies
derrickman

Forum: General Chat   Posted: 07/01/2010 11:17:30   Subject: Looking after the pit ponies
hence the old soldiers' doggerel..

soldiers' pay
shilling a day
but a horse costs a hundred pound
Topic: Economic Cap Lighting
derrickman

Forum: Lamps & Lighting   Posted: 06/01/2010 19:46:14   Subject: Economic Cap Lighting
regarding the Raptor Pro, I would agree. I've lost some of my early enthusiasm for mine, the beam is very tight and means that you tend to be dazzled close to while the visibility of objects outside t
Topic: Pyrite eating bacteria/O2 levels in mines.
derrickman

Forum: General Chat   Posted: 03/01/2010 17:39:11   Subject: Pyrite eating bacteria/O2 levels in mines.
canal tunnels can be very dodgy.

I worked on the Blisworth canal tunnel reconstruction in the 70s and ( quite apart from the appalling smell ) there was a huge amount of organic residue in
Topic: Pyrite eating bacteria/O2 levels in mines.
derrickman

Forum: General Chat   Posted: 02/01/2010 19:31:10   Subject: Pyrite eating bacteria/O2 levels in mines.
the real tragedy of the two fatalities at Wheal Jane was that the two in question were specimen hunting in an area screened by ventilation bratticing.The problem was well known and procedures were in
Topic: Pyrite eating bacteria/O2 levels in mines.
derrickman

Forum: General Chat   Posted: 02/01/2010 18:37:41   Subject: Pyrite eating bacteria/O2 levels in mines.
coal mines may contain carbon monoxide, carbon dioxide, methane and a number of other anoxic gases released from the strata during and following excavation.

Wheal Jane was well known for an
Topic: Box Loco - Question
derrickman

Forum: South West England   Posted: 30/12/2009 12:26:51   Subject: Box Loco - Question
slightly before that, 1968 - 1972.

I went to Camborne in 1973 and apart from a single trip to the Dragon Rally in absolutely filthy weather on a Panther outfit in about 1976, I've never be
Topic: Box Loco - Question
derrickman

Forum: South West England   Posted: 30/12/2009 08:03:48   Subject: Box Loco - Question
interesting link, apart from anything the comments about the rapid inflation in the prices of redundant and obsolete industrial locos for preservation.

I'm just about old enough to remember
Topic: Box Loco - Question
derrickman

Forum: South West England   Posted: 29/12/2009 11:16:31   Subject: Box Loco - Question
it's curious how much re-invention of the wheel seems to have taken place during the 19th century.

civil engineering drawings are often little more than 'concept sketches' as late as the 19
Topic: Box Loco - Question
derrickman

Forum: South West England   Posted: 29/12/2009 06:17:33   Subject: Box Loco - Question
well, yes and no. I've had many problems over the years, working up to old structures.

as an example, I did survey control for a tunnel into the Carnaby St power substation some years ago.
Topic: Box Loco - Question
derrickman

Forum: South West England   Posted: 28/12/2009 16:45:49   Subject: Box Loco - Question
drawings from that period can be wildly inaccurate, or plain speculative, or just show original proposals, or a generic item used somewhere else, or completely out of scale, or just made so long after
Topic: Pioneer locomotive, Levant
derrickman

Forum: South West England   Posted: 21/12/2009 10:12:09   Subject: Pioneer locomotive, Levant
http://forum.gn15.info/viewtopic.php?t=2779&start=600

saw this on another website.. anyone know anything about this?
Topic: Fancy a mine in your garden?
derrickman

Forum: General Chat   Posted: 20/12/2009 13:19:07   Subject: Fancy a mine in your garden?
several of the Combe Down entrances were in peoples' gardens, a few of them have been preserved as bat habitats. The paperwork involved in establishing that the mines are stabilised has been immense.
Topic: How would you empty a kibble?
derrickman

Forum: South West England   Posted: 18/12/2009 06:26:06   Subject: How would you empty a kibble?
I've seen ( once ) the 'lazy chain' arrangement described, on a baling skip used for emptying a shaft sump. The skip would be lowered to the water level and its loose bottom would be pushed up on cont
Topic: smallcleugh
derrickman

Forum: North East England   Posted: 17/12/2009 08:44:53   Subject: smallcleugh
[quote="pickering man"][quote="RJV"]Bri and I had an admittedly somewhat lacklustre go at it a few months back with little success. Its only shale though, if you broke it up a bit with a wrecking bar
Topic: Under-suits
derrickman

Forum: General Chat   Posted: 16/12/2009 10:38:52   Subject: Under-suits
I used to use a 3mm surfers' sleeveless wetsuit with a couple of light woolens ( no fleeces in those days ) and overalls over everything, plus wetsocks, and that worked pretty well for most things.
Topic: Moel Tryfan track story
derrickman

Forum: North Wales   Posted: 16/12/2009 08:37:27   Subject: Moel Tryfan track story
would this be a Crown Estates problem or a Land Stabilisation Agency problem?

I don't know about Wales, but this seems similar to the situation regarding the lower end of the failed Mam Tor
Topic: Oil Shale reserves
derrickman

Forum: General Chat   Posted: 15/12/2009 08:38:51   Subject: Oil Shale reserves
oil shale is dirty, in environmental terms, and not particularly cheap. Break-even figures vary with who is providing them, as they often tend to do, but somewhere around $80/bbl seems to be the mark.
Topic: What kit selection to buy for a beginner?
derrickman

Forum: SRT Equipment & Training   Posted: 12/12/2009 14:17:00   Subject: What kit selection to buy for a beginner?
[quote="ttxela"][quote="derrickman"]I have one of those little foil blankets, still in its 1980s wrapper, been in the corner of my ammo can for donkey's years.[/quote]

I'm sure I've read a
Jump to page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 > >>
Safety LED Miners Caplamps Moore Books: Specialist Books I.A. Recordings: Mining and Industrial History DVDs Starless River - Caving Store Explore a Disused Welsh Slate Mine
Disclaimer: Mine exploring can be quite dangerous, but then again it can be alright, it all depends on the weather. Please read the proper disclaimer.
© 2005 to 2015 AditNow.co.uk
Top of Page